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Earnings Per Share (Tables)
 9 Months Ended
Sep. 30, 2021
Earnings Per Share [Abstract]  
Schedule of Computation of Basic Earnings Per Share, Assuming Dilution The following table sets forth the computation of basic earnings per share and earnings per share, assuming dilution.
Third QuartersNine Months
2021202020212020
Numerator (Dollars in millions):
Net Earnings
$968 $736 $2,847 $2,005 
Denominator (Units in millions):
Average Common Shares Outstanding2,237 2,295 2,263 2,302 
Other Potentially Dilutive Common Shares5 5 5 5 
Average Common Shares Outstanding, Assuming Dilution
2,242 2,300 2,268 2,307 
Net Earnings Per Share, Basic
$0.43 $0.32 $1.26 $0.87 
Net Earnings Per Share, Assuming Dilution
$0.43 $0.32 $1.26 $0.87 
Schedule of Total Average Outstanding Stock Options Excluded from Diluted Earnings Per Share Calculation The total average outstanding stock options that were excluded from the diluted earnings per share calculation because their effect was antidilutive is in the table below.
Third QuartersNine Months
2021202020212020
Antidilutive Stock Options Excluded from Diluted EPS (Millions)
2626
Schedule of Share Repurchased by the Company During third quarters and nine months ended 2021 and 2020, the Company engaged in the following repurchase activities:
Third QuartersNine Months
2021202020212020
Shares Repurchased (Millions)
34 2 74 31 
Cost of Shares (Dollars in millions)
$1,064 $48 $2,316 $664